<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title>123</title>
		<link rel="stylesheet" type="text/css" href="css/style.css"/>
	</head>
	<body>
		<div id="">
			<p>半径：</p><input type="text" placeholder="半径" id="a"/>
			<p>周长：</p><input type="text" placeholder="周长" id="b"/>
			<p>面积：</p><input type="text" placeholder="面积" id="c"/>
		</div>
		<br />
		
		<p>直径：</p><input type="text" placeholder="直径" id="d"/>
		<p>周长：</p><input type="text" placeholder="周长" id="e"/>
		<p>面积：</p><input type="text" placeholder="面积" id="f"/>
		<script src="js/index.js"></script>
	</body>
</html>
